Fire extinguisher



Nov. 27, 1934. E. F. BAUMGARTEN 1,932,192

FIRE EXTINGUISHER Filed March'26, i954 Y /fl/ INVENTOR 52204222 fiaumyten BY Q) FATTORNEYV Patented Nov. 27, 1934 UNITED STATES PATENT OFFICE3 Claims.

The object of this invention is to provide an apparatus or machine forblowing sand or dirt on fires, more especially forest fires, to put outthe fire, the machine being capable of use more especially where wateris not available.

These and other objects of the invention will be illustrated in thedrawing, described in the specification and pointed out in the claims atthe end thereof.

In the drawing:

Figure 1 is a side elevation of the machine and the hose and nozzletherefor.

Figure 2 is a vertical longitudinal section through the machine on theline 2a:2.r of Figure 3.

Figure 3 is a top plan view of the machine with the sand hopper and topcover plate omitted.

In the drawing like reference numerals indicate like parts.

In the drawing reference numeral 1 indicates a trunk or fan chamber, and2 indicates a duct leading therefrom. Inside of the fan chamber isprovided a rotary fan 3 mounted on the shaft 4, which shaft is supportedin and rotates in upright brackets 5 and 6. In the side of the fancasing surrounding the shaft 4 is the intake opening '7, through whichair is drawn into the fan chamber, which air is expelled in a blastalong the trunk 2 by the rotation of the fan.

The top of the fan chamber and trunk is covered by the metal plate 8,which has suitable cleats or brackets 9 on each side thereof whichoverlap the sides of the fan casing and are fastened thereto by screwsor in any other suitable manner.

A strip of rubber packing 8a is provided between the cover plate and thesides of the trunk. The forward end of the trunk is supported bybrackets 10, between which is placed the block 11.

On top of the plate 8 is provided the sand hopper 12, the lower end ofwhich rests directly on the plate 8 and is fastened thereto, and theupper end of which is supported by the uprights 13.

As shown in Figure 2, the bottom 14 of this hopper slopes down andforward, and at its forward end the hopper is provided with an opening15 that registers with an opening 16 in the metal plate 8 forming thetop of the fan casing or trunk, so that the sand is fed in a streamwhich falls directly across the blast of air, by which it is carriedforward and out.

The trunk is provided on the inside with converging sides, and at theend the top and bottom is provided with beveled plates to reduce theopen- ,55 ing at the delivery end.

On the sand hopper are provided parallel uprights 16a and 17, on whichare mounted suitable guides 18 in which slides a valve 19. To this valveis attached a cable 20 which passes up over a drum or pulley 21. Thecable then passes down to a shaft 22 which is mounted to rotate in theuprights 16a and 17. On the outer end of this shaft are provided a crankand handle 23 by which it can be turned to lift the valve. A ratchetwheel 24 is provided which is integral with the shaft. A pawl 25 isprovided, held in engagement with the ratchet wheel by the spring 26 soas to prevent backward movement of the shaft, thus holding the valve 19open in the desired position.

Leading forward from the trunk is a tube 30, on the end of which is aflexible hose 31 with a nozzle 32, by which the blast of air and sand isdirected at the fire in any direction.

All of this apparatus is mounted on a base 40.

In operation, the shaft 4 and fan 3 is rotated at high speed, causing ablast of air to be blown through the trunkand pipeline and nozzle, andthe sand is fed from the hopper 12 at the desired rate, and the sand andair are blown on the fire for the purpose of putting it out. i

I claim:

1. A fire extinguisher comprising a fan chamber, a fan in said chamber,a trunk leading out therefrom adapted to carry an air blast, a metalplate covering the top of said trunk and constituting a part of it, saidplate having cleats thereon extending down over the side of the trunk.

2. A fire extinguisher comprising a fan chamber, a fan in said chamber,a trunk leading out therefrom adapted to carry an air blast, a metalplate covering the top of said trunk and constituting a part of it, saidplate having cleats thereon extending down over the side of the trunk, ahopper on top of said trunk, said hopper and said trunk havingconnecting openings through which sand can pass into the trunk from saidhopper and be blown out therefrom by a blast of air said trunk having acontracted circular opening at the delivery end thereof.

3. A fire extinguisher comprising a fan chamber, a fan in said chamber,a trunk leading out therefrom adapted to carry an air blast, a metalplate covering the top of said trunk and constituting a part of it, saidplate having cleats thereon extending down over the side of the trunk, 1packing between said plate and the sides of said trunk.

EDWARD F. BAUMGARTEN.

